Exposure to sunlight prematurely ages the skin. Exposure to ultraviolet
light is responsible for the fine and coarse wrinkles; irregular
pigmentation; brown and spots; and leathery skin.

The more sun exposure a person has, the higher the risk of skin cancers.
The key to minimizing the damaging effects of the sun is avoiding further sun
exposure; damage that is already done is difficult to reverse. Chemical
peels, alpha-hydroxy acids, tretinoin creams, and laser skin resurfacing may
improve the appearance of thin wrinkles and irregular pigmentation.